EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Earnings Per Share [Abstract]
Net income	$ 122,490	$ 131,319
Basic earnings per share
Weighted average shares of common stock outstanding-basic (in shares)	100,701	99,855
Basic earnings per common share (usd per share)	$ 1.22	$ 1.32
Diluted earnings per common share
Weighted average shares of common stock outstanding-basic (in shares)	100,701	99,855
Incremental shares (in shares)	528	623
Weighted average shares of common stock outstanding-diluted (in shares)	101,229	100,478
Diluted earnings per common share (usd per share)	$ 1.21	$ 1.31